1. Key Laboratory of Inorganic Coating Materials CASShanghai Institute of CeramicsChinese Academy of Sciences 1295 Dingxi Road Shanghai 200050 China
2. Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of Sciences 19 Yuquan Road Beijing 100049 China
3. Department of Spine SurgeryShanghai East HospitalTongji University School of Medicine Shanghai 200120 China
4. Department of Spine SurgeryChangzheng HospitalSecond Military Medical University Shanghai 200003 China
5. School of Materials Science and EngineeringEast China Jiao Tong University Nanchang 330013 China